Engine nozzle with multi-layer partition structure and pulsejet engine

Abstract

The application provides an engine nozzle with a multi-layer partition structure and a pulse jet engine. The nozzle is provided with a multi-layer partition structure on the outside of the nozzle wall, and a plurality of sealed cabins are formed in each layer of the partition structure. In response to the inner layer of the nozzle wall being broken in a high-temperature and high-pressure environment, the sealed cabins are used to buffer the impact of high-temperature gas and reduce the thermal load of the partition. Each layer of the partition structure comprises a support vertical plate and a partition plate. The number of the support vertical plates is several, and the support vertical plates are connected to the outer wall of the nozzle. The partition plate is arranged on the side of the support vertical plate away from the nozzle, and the partition plate and the support vertical plates enclose a plurality of sealed cabins. The engine nozzle with a multi-layer partition structure and the pulse jet engine provided by the application use the small cabins formed by the partition plate and the support vertical plate to buffer the high-temperature gas and reduce the thermal load of the partition plate, thereby improving the overall service life of the engine.

Description

Technical Field

[0001] This application belongs to the field of power machinery technology, and in particular relates to an engine nozzle with a multi-layer partition structure and a pulse jet engine. Background Technology

[0002] The pulse jet engine is a simple and easy-to-manufacture power machine. It was first used in the V1 rocket and is still used in fields such as model aircraft.

[0003] However, existing pulse jet engines have two problems that urgently need to be solved: First, the single-layer metal wall has poor heat insulation and the temperature on the outside of the engine is too high, which causes serious energy waste and severely restricts the installation location and nearby materials; Second, the single-layer metal wall is difficult to withstand long-term operation in high-temperature environments, and the engine wall is prone to damage, which leads to a sharp decline in working capacity. Summary of the Invention

[0004] In view of this, the present application aims to provide an engine nozzle and a pulse jet engine with a multi-layered partition structure to solve at least one of the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] In a first aspect, this application provides an engine nozzle with a multi-layer partition structure, wherein the outer wall of the nozzle is provided with a multi-layer partition structure, and each partition structure forms a number of spaced sealed chambers inside.

[0007] In response to the rupture of the inner wall of the nozzle under high temperature and high pressure conditions, the sealed chamber is used to buffer the impact of high temperature gas and reduce the thermal load.

[0008] Furthermore, each layer of the partition structure includes a supporting longitudinal plate and a partition plate;

[0009] The number of the supporting longitudinal plates is several, and the several supporting longitudinal plates are connected to the outer wall of the nozzle. The partition is disposed on the side of the supporting longitudinal plates away from the nozzle. The partition and the several supporting longitudinal plates together form several sealed chambers.

[0010] Furthermore, the cross-sectional profile of the supporting longitudinal plate is either a straight line or a curve;

[0011] The cross-sectional profiles of the supporting longitudinal plates in the same layer intersect or are parallel.

[0012] Furthermore, the arrangement and structure of the partition structures differ for each layer.

[0013] Furthermore, the supporting longitudinal plate includes ribs, columns, stiffeners, or plates.

[0014] Furthermore, the thickness of the supporting longitudinal plate and the partition plate is 0.2mm to 0.5mm.

[0015] Secondly, based on the same inventive concept, this embodiment also provides a pulse jet engine, including an engine nozzle with a multi-layered partition structure as described in the first aspect.

[0016] Compared with the prior art, the engine nozzle and pulse jet engine with a multi-layer partition structure described in this application have the following advantages:

[0017] The engine nozzle and pulse jet engine with multi-layer partition structure described in this application form several spaced sealed compartments on the outer side of the nozzle wall. On the one hand, this reduces the heat dissipation of the high-temperature working fluid to the outside, thereby improving the engine's working capacity. On the other hand, when the inner wall of the nozzle cracks under high temperature and high pressure, the outermost partition replaces the high-temperature working fluid at the crack, while the small compartment formed by the partition and the supporting longitudinal plate buffers the high-temperature gas and reduces the thermal load on the partition, thereby improving the overall lifespan of the engine. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of an engine nozzle structure with a single-layer partition structure according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1- Nozzle; 2- Supporting longitudinal plate; 3- Baffle; 4- Sealed compartment. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Please see Figure 1 As shown, this embodiment provides an engine nozzle with a multi-layer partition structure. The nozzle 1 has a multi-layer partition structure on the outer side of its pipe wall, and each partition structure forms several spaced sealed chambers 4 inside.

[0025] In response to the rupture of the inner wall of the nozzle 1 under high temperature and high pressure, the sealed chamber 4 is used to buffer the impact of high temperature gas and reduce the heat load of the isolation.

[0026] Specifically, in this embodiment, compared with the conventional pulse jet engine nozzle, the engine nozzle 1 with a multi-layer partition structure uses multi-layer partitions to form the nozzle 1 wall, so that the engine wall is changed from a single-layer metal wall to a multi-layer partition wall composed of multiple small sealed chambers 4. Among them, multiple partition walls are located on the outside of the engine nozzle 1, and their coverage area can be the outside of the overall inner wall of the engine nozzle 1, or the outside of the wall in the measured high-temperature area.

[0027] The engine nozzle with a multi-layered partition structure described in this embodiment forms several spaced sealed chambers on the outer side of the nozzle wall. On the one hand, this reduces the heat dissipation of the high-temperature working fluid to the outside, thereby improving the engine's working capacity. On the other hand, when the inner wall of the nozzle cracks under high temperature and high pressure, the outermost partition replaces the high-temperature working fluid at the crack, while the small chamber formed by the partition and the supporting longitudinal plate buffers the high-temperature combustion gas, thereby reducing the thermal load on the partition and improving the overall lifespan of the engine.

[0028] In some implementations, the arrangement and structure of the partition structures in each layer are different;

[0029] Each layer of the partition structure includes a supporting longitudinal plate 2 and a partition plate 3;

[0030] The number of the supporting longitudinal plates 2 is several, and the several supporting longitudinal plates 2 are connected to the outer wall of the nozzle 1. The partition plate 3 is disposed on the side of the supporting longitudinal plate 2 away from the nozzle 1. The partition plate 3 and the several supporting longitudinal plates 2 together form several sealed chambers 4.

[0031] Specifically, in this embodiment, the arrangement and structure of each partition structure are different to improve the overall stability of the partition structure. The thickness of the supporting longitudinal plate 2 and the partition plate 3 is 0.2mm to 0.5mm. Tests have proven that the multiple partition structures described in this embodiment can withstand the impact of high-temperature combustion gases, effectively buffer the high-temperature combustion gases, and effectively ensure the overall lifespan of the engine.

[0032] In some embodiments, the cross-sectional profile of the supporting longitudinal plate 2 is a straight line or a curve;

[0033] The cross-sectional profiles of the supporting longitudinal plates 2 in the same layer intersect or are parallel;

[0034] The supporting longitudinal plate 2 includes ribs, columns, stiffeners, or plates.

[0035] Specifically, in this embodiment, the cross-sectional profile of the same-layer support longitudinal plate 2 can be a straight line or a curve, and the cross-sectional profiles of the same-layer support longitudinal plate 2 can intersect or be parallel. The shape and distribution of the different-layer support longitudinal plates 2 are different. The shape of the support longitudinal plate 2 includes, but is not limited to, ribs, columns, grooves, pits, etc. The support longitudinal plate 2 can be formed by additive or subtractive manufacturing based on the partition, or it can be formed based on the partition by methods including, but not limited to, stamping and hammer forging.

[0036] Based on the same inventive concept, corresponding to the engine nozzle of any of the above embodiments, the embodiments of this application also provide a pulse jet engine.

[0037] The pulse jet engine of the above embodiments is used to achieve the corresponding engine nozzle with a multi-layered partition structure in any of the foregoing embodiments, and has the beneficial effects of the corresponding engine nozzle embodiments, which will not be repeated here.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

[0039] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. An engine nozzle with a multi-layered partition structure, characterized in that: The nozzle has a multi-layer partition structure on the outside of its pipe wall, and each partition structure forms several sealed chambers arranged at intervals. In response to the rupture of the inner wall of the nozzle under high temperature and high pressure, the sealed chamber is used to buffer the impact of high temperature gas and reduce the heat load of the isolation. Each layer of the partition structure includes a supporting longitudinal plate and a partition plate; The number of the supporting longitudinal plates is several, and the several supporting longitudinal plates are connected to the outer wall of the nozzle. The partition is disposed on the side of the supporting longitudinal plates away from the nozzle. The partition and the several supporting longitudinal plates together form several sealed chambers.

2. The engine nozzle with a multi-layered partition structure according to claim 1, characterized in that: The cross-sectional profile of the supporting longitudinal plate is either a straight line or a curve; The cross-sectional profiles of the supporting longitudinal plates in the same layer intersect or are parallel.

3. The engine nozzle with a multi-layered partition structure according to claim 1, characterized in that: The arrangement and structure of the partitions differ on each floor.

4. The engine nozzle with a multi-layered partition structure according to claim 1, characterized in that: The supporting longitudinal plate includes ribs, columns, stiffeners, or plates.

5. The engine nozzle with a multi-layered partition structure according to claim 1, characterized in that: The thickness of the supporting longitudinal plate and the partition plate is 0.2mm~0.5mm.

6. A pulse jet engine, characterized in that, Including the engine nozzle with a multi-layered partition structure as described in any one of claims 1 to 5.

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